standard, titled "Straight-sided splines – Heavy series," is a technical specification published by the German Institute for Standardization (DIN) that defines the geometry, dimensions, and tolerances for heavy-duty splined shaft and hub connections.
: The primary publisher for all DIN standards. You can search for "DIN 5464" on their official website to purchase and download the current version. din 5464 standard pdf
pressure angle. This is critical because it prevents "hub expansion." In other words, when the shaft spins under heavy load, the force is directed tangentially rather than pushing outward, which protects thin-walled hubs from cracking or deforming. What is Inside the PDF? pressure angle
standard specifies the dimensions and tolerances for straight-sided splines with 4 splines Purpose: Defines technical requirements